Interstate Pneumatics B100A Adjustable Pocket Blow Gun - Automotive Plug 4.5 inch long compact easy to handle design and Durable Aluminum body construction Non-slip grip knurling on tip and Convenient pocket clip Adjustable air pressure knob Inlet Connection: 1/4 inch Automotive | Max. Operating Pressure (PSI): 175 Body Material: Anodized Aluminum | Color: Black